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器件型号：AM62A7 工具/软件：
SDK 版本：10_00_00_08
我尝试运行这个命令、但得到了错误
gst-launch-1.0 v4l2src device=/dev/video3 io-mode=dmabuf-import ! \ filesink location=/tmp/test.yuv sync=true
错误：
Setting pipeline to PAUSED ... Pipeline is live and does not need PREROLL ... Pipeline is PREROLLED ... Setting pipeline to PLAYING ... New clock: GstSystemClock ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: No downstream pool to import from. Additional debug info: /usr/src/debug/gstreamer1.0-plugins-good/1.22.12/sys/v4l2/gstv4l2object.c(5471): gst_v4l2_object_decide_allocation (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: When importing DMABUF or USERPTR, we need a pool to import from ERROR: from element /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: Internal data stream error. Execution ended after 0:00:00.001818700 Setting pipeline to NULL ... Additional debug info: /usr/src/debug/gstreamer1.0/1.22.12/libs/gst/base/gstbasesrc.c(3134): gst_base_src_loop (): /GstPipeline:pipeline0/GstV4l2Src:v4l2src0: streaming stopped, reason not-negotiated (-4) Freeing pipeline ...
如果我将 IO 模式更改为 mmap 或 dmabuf、它将完美工作。
我注意到大多数例子使用 dmabuf-import 与 TIovx Gstreamer 插件 — 与普通 dmabuf 相比是否有真正的性能差异? 另外,为什么我不能让 dmabuf-import 工作? 这可能是我个人的驱动程序问题吗？
